设计和实验演示一个集成的传感和通信系统,用于检测生命体征
Chi Zhang1, Jinyuan Duan1, Shuai Lu1
1School of Transportation and Civil Engineering, Nantong University, Nantong 226019, China.
Sensors (Basel, Switzerland)
|June 27, 2025
概括
这项研究引入了一种集成传感和通信 (ISAC) 系统,使用直角频率分割复杂化 (OFDM) 信号来同时检测和通信生命信号. 该系统准确地识别呼吸和心跳率,在搜救行动中非常有用.
科学领域:
- 电气工程 电气工程
- 生物医学工程 生物医学工程
- 信号处理 信号处理
背景情况:
- 生命体征监测对于医疗保健,安全和灾害响应至关重要.
- 现有的用于检测生命信号的雷达系统在通信基础设施中面临挑战,特别是在搜救 (SAR) 行动期间.
- 综合传感和通信 (ISAC) 系统提供了双重功能的方法.
研究的目的:
- 通过ISAC系统提出和演示一种用于检测生命体征的新方法.
- 为了利用直角频率分割复杂化 (OFDM) 信号进行同时传感和通信.
- 为了验证系统在检测呼吸和心跳率方面的有效性.
主要方法:
- 开发了一个使用软件定义无线电 (SDR) 的ISAC演示系统.
- 采用专门设计的OFDM信号,用于同时传感和通信.
- 处理反射的OFDM信号以估计由人类呼吸和心跳引起的微多普勒效应.
主要成果:
- 精确检测生命体征,包括呼吸和心跳率,使用1MHz带宽的OFDM信号.
- 证实了与传统的基于接触的方法相比,检测生命体征的准确性.
- 验证了OFDM信号的传感和通信的双重功能能力.
结论:
- 拟议的ISAC系统有效地检测生命体征,同时保持通信链路.
- 开发的基于OFDM的方法显示了在具有挑战性的环境中增强SAR操作的巨大潜力.
- 这种方法可以广泛应用于更广泛的ISAC系统,用于各种监控和救援应用.
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